Title :
GaAs rib-waveguide directional-coupler switch with Schottky barriers
Author_Institution :
NTT, Musashino Electrical Communication Laboratory, Musashino, Japan
Abstract :
A new type of GaAs electro-optic directional-coupler switch for monolithic integrated optics has been proposed and demonstrated. The devices were fabricated from a pair of closely spaced low-loss (¿ ¿ 2.2 dB/cm at 1.15 ¿m) single-mode rib waveguides with Au Schottky barriers. A 30 dB extinction ratio in the input channel was measured at a reverse-bias voltage of 24 V and the switches have a potential bandwidth of 2 GHz.
Keywords :
directional couplers; electro-optical devices; integrated optics; optical couplers; Au Schottky barriers; GaAs rib waveguide directional coupler switch; electrooptic switch; extinction ratio; monolithic integrated optics; rib waveguides;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780261
